Magnesium Oxide
Magnesium Oxide carries a source-backed screening score of 3/5 and appears in 1,900 indexed US food products.
Source-backed answer
Magnesium Oxide appears in 1,900 catalogued products. CSPI has no rating attached in this snapshot. Its FDA SAFFA status is “GRAS.” Those source labels describe the ingredient; they do not establish whether a particular product, dose, allergy, or diet is safe.
- 1,900
- catalogued products
- #418
- usage rank of 247,206
- 302
- named brands represented
- 56%
- average depth down ingredient lists
Catalog prevalence comes from Open Food Facts ingredient lists. FDA SAFFA and CSPI Chemical Cuisine labels are shown only when the source record contains them.
High-volume listing for Magnesium Oxide - usage rank #418
- Usage rank
- #418
- of 247,206 ingredients that appear in at least one catalogued product, listed in more products than 99.8% of them.
- Typical depth in an ingredient list
- 56%
- Mean relative depth 56% across 1,900 parsed labels, slot 19.6 on average. Magnesium Oxide tends to sit in the lower half of the list. Depth is location on the label, not a measured dose.
Derived by this site from the ingredient lists of every catalogued product (Open Food Facts), recomputed on each data refresh. 247,206 ingredients have at least one appearance and are ranked here. Usage and list position describe prevalence, not safety.
Reading this ingredient record
Audit the co-occurring flags first
59.1% of the linked products contain at least one separately flagged ingredient, making co-occurrence the dominant follow-up question. That figure does not identify Magnesium Oxide as the trigger. Open records such as 0016500579793; 1/2 Cheese Pizza & 1/2 Pepperoni Pizza; 3 meat sausage pepperoni & ham pizza, 3 meat and inspect which ingredient row carries the caution marker. The 69.1/100 product average is therefore a triage signal for this surrounding formulation set, not an ingredient verdict. Its 56% average label depth helps locate the term when checking the package.
59.1% of linked products contain a separately flagged ingredient
Processing is unusually concentrated here: Group 4 accounts for 1873 of 1891 NOVA-tagged records. That describes the surrounding products, not the substance. For a useful comparison, hold category and processing level constant, then inspect which named component changes alongside the caution flag; otherwise the product mix will confound the ingredient question.
Next check: open the lowest-scoring linked formulation and locate the exact caution-marked component.
What else is usually in the same product as Magnesium Oxide
Across the 1,900 products on this site that list Magnesium Oxide, these flagged additives appear alongside it most often. The comparison column is how often each one appears across every product with a parsed ingredient list, so the two figures are measured over the same set. Acesulfame Potassium shows up about 18.7x more often with Magnesium Oxide than in the catalogue at large.
| Additive | Shared products | Share of Magnesium Oxide products | Share of all products |
|---|---|---|---|
| Acesulfame Potassium | 640 | 33.7% | 1.8% |
| Aspartame | 456 | 24% | 0.9% |
| Red 40 | 450 | 23.7% | 5.4% |
| Blue 1 | 317 | 16.7% | 4.2% |
| Yellow 5 | 277 | 14.6% | 4.8% |
Co-occurrence describes what manufacturers formulate together. It is not a claim that these additives interact, and it carries no regulatory meaning. Counted over products with parsed ingredient lists; Open Food Facts, 2026-09-01.
Function
ANTICAKING AGENT OR FREE-FLOW AGENT, DRYING AGENT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, FORMULATION AID, HUMECTANT, NUTRIENT SUPPLEMENT, PH CONTROL AGENT, PROCESSING AID
How do the sampled products compare?
Each point is one of the 16 sampled products listed below: its overall safety score against how many separately flagged ingredients its label carries. Bubble size is the number of ingredient rows the label actually resolved to.
Safety score vs. flagged-ingredient count for products containing Magnesium Oxide
Products Containing Magnesium Oxide
A sample of 16 high-volume listings among the 1,900 indexed products containing Magnesium Oxide:
High-volume peers for Magnesium Oxide beside “Pasteurized Milk And Cream”
High-volume peers for Magnesium Oxide: 1,900 products, mean screening score 69.1/100. Catalog-mass neighbours in view: Pasteurized Milk And Cream; Chia Seeds; Cultured Dextrose. Axes below stay distinct so count-neighbors do not duplicate score-neighbors.
Similar product count
Nearest other ingredients by Open Food Facts product count (floored at ≥50).
Similar mean product score
Nearest other ingredients by mean product screening score (floored at ≥50 scored products), distinct from the count row.
Next steps from the Magnesium Oxide page
Start from Magnesium Oxide's 1,900 catalogued appearances and the attached source fields, then open the product rows that match your use case.
- Open the product sample for Magnesium Oxide and read how the term sits on real packages. Browse linked labels
- Move to a second ingredient page and compare registry fields plus catalog mass side by side. Open a peer record
- Check the methodology for how FDA SAFFA, CSPI, and Open Food Facts rows are joined on this site. See source joins
This page describes published source classifications and product-label coverage. It is not dietary, allergy, or medical advice.
Magnesium Oxide — common follow-ups
How should I read safety signals when Magnesium Oxide sits in heavily flagged products? ▼
59.1% of linked products contain at least one separately flagged ingredient, so the first task is locating which row carries the caution marker — not assuming Magnesium Oxide is the trigger. Where a source rating exists, Magnesium Oxide scores 3/5 on this site's screening scale with FDA SAFFA status "GRAS". None of that replaces a product-, dose-, allergy-, or person-specific determination.
Which product shelves show up most often with Magnesium Oxide? ▼
Magnesium Oxide ranks in the top decile by product count (#418 of 247,206), appearing in 1,900 indexed products led by Beverages. The sample list below is a slice of that footprint, not the full universe.
What function does Magnesium Oxide serve when it appears beside other flagged additives? ▼
Magnesium Oxide is recorded as a anticaking agent or free-flow agent, drying agent, flavor enhancer, flavoring agent or adjuvant, formulation aid, humectant, nutrient supplement, ph control agent, processing aid in source technical-effect fields. In high co-flag products, that function coexists with other caution-marked components — inspect the full list rather than isolating this role.
Regulatory status: FDA SAFFA (Magnesium Oxide). Safety ratings: CSPI Chemical Cuisine; product presence: Open Food Facts via PlainFoodSafe (September 2026). Figures are computed from those sources, no editor-typed counts. Methodology · State regulations.